User comment on support ticket here : GHS-4008

you already have this feature for i mpediments in the planning board and the task board: http://screencast.com/t/wRfMOwWCRlZ - I am looking for something similar in the rapid board.

In the rapid board, impediments is not visible: http://screencast.com/t/al7cw1kmPH6

An example of how it looks in a similar tool (agilezen) when an issue is blocked: http://screencast.com/t/9bGFBAGj (a red bar around the issue)